SLVA514C
July 2014 – November 2022
TPS62125
Using the TPS62125 in an Inverting Buck-Boost Topology
Trademarks
1
Inverting Buck-Boost Topology
1.1
Design Considerations
1.2
Concept
1.3
Output Current Calculations
1.4
VIN and VOUT Range
2
Digital Pin Configurations
2.1
Enable Pin
2.2
Enable Hysteresis Pin
2.3
Power Good Pin
2.4
Discharging the Output Voltage
3
Startup Behavior and Switching Node Consideration
4
External Component Selection
4.1
Inductor Selection
4.2
Input Capacitor Selection
4.3
Selecting L and COUT for Stability
5
Typical Performance and Waveforms
6
Conclusion
7
References
8
Revision History
2
Digital Pin Configurations